Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi quan doc snippets" » "thi quan code snippets", "thi xuan doc snippets", "tri quan doc snippets", "thi luan doc snippets", "thi quan doi snippets", "thi quan dac snippets", "thi quan doan snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thi quan doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi quan doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi quan doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi quan doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.